src/server/rest.rs

   1 use std::collections::HashMap;
   2 use std::future::Future;
   3 use std::hash::BuildHasher;
   4 use std::path::{Path, PathBuf};
   5 use std::pin::Pin;
   6 use std::sync::{Arc, Mutex};
   7 use std::task::{Context, Poll};
   8
   9 use anyhow::{bail, format_err, Error};
  10 use futures::future::{self, FutureExt, TryFutureExt};
  11 use futures::stream::TryStreamExt;
  12 use hyper::header::{self, HeaderMap};
  13 use hyper::body::HttpBody;
  14 use hyper::http::request::Parts;
  15 use hyper::{Body, Request, Response, StatusCode};
  16 use lazy_static::lazy_static;
  17 use serde_json::{json, Value};
  18 use tokio::fs::File;
  19 use tokio::time::Instant;
  20 use url::form_urlencoded;
  21 use regex::Regex;
  22
  23 use proxmox::http_err;
  24 use proxmox::api::{
  25     ApiHandler,
  26     ApiMethod,
  27     HttpError,
  28     Permission,
  29     RpcEnvironment,
  30     RpcEnvironmentType,
  31     check_api_permission,
  32 };
  33 use proxmox::api::schema::{
  34     ObjectSchema,
  35     parse_parameter_strings,
  36     parse_simple_value,
  37     verify_json_object,
  38 };
  39
  40 use super::environment::RestEnvironment;
  41 use super::formatter::*;
  42 use super::ApiConfig;
  43
  44 use crate::auth_helpers::*;
  45 use crate::api2::types::Userid;
  46 use crate::tools;
  47 use crate::tools::FileLogger;
  48 use crate::tools::ticket::Ticket;
  49 use crate::config::cached_user_info::CachedUserInfo;
  50
  51 extern "C"  { fn tzset(); }
  52
  53 pub struct RestServer {
  54     pub api_config: Arc<ApiConfig>,
  55 }
  56
  57 const MAX_URI_QUERY_LENGTH: usize = 3072;
  58
  59 impl RestServer {
  60
  61     pub fn new(api_config: ApiConfig) -> Self {
  62         Self { api_config: Arc::new(api_config) }
  63     }
  64 }
  65
  66 impl tower_service::Service<&tokio_openssl::SslStream<tokio::net::TcpStream>> for RestServer {
  67     type Response = ApiService;
  68     type Error = Error;
  69     type Future = Pin<Box<dyn Future<Output = Result<ApiService, Error>> + Send>>;
  70
  71     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
  72         Poll::Ready(Ok(()))
  73     }
  74
  75     fn call(&mut self, ctx: &tokio_openssl::SslStream<tokio::net::TcpStream>) -> Self::Future {
  76         match ctx.get_ref().peer_addr() {
  77             Err(err) => {
  78                 future::err(format_err!("unable to get peer address - {}", err)).boxed()
  79             }
  80             Ok(peer) => {
  81                 future::ok(ApiService { peer, api_config: self.api_config.clone() }).boxed()
  82             }
  83         }
  84     }
  85 }
  86
  87 impl tower_service::Service<&tokio::net::TcpStream> for RestServer {
  88     type Response = ApiService;
  89     type Error = Error;
  90     type Future = Pin<Box<dyn Future<Output = Result<ApiService, Error>> + Send>>;
  91
  92     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
  93         Poll::Ready(Ok(()))
  94     }
  95
  96     fn call(&mut self, ctx: &tokio::net::TcpStream) -> Self::Future {
  97         match ctx.peer_addr() {
  98             Err(err) => {
  99                 future::err(format_err!("unable to get peer address - {}", err)).boxed()
 100             }
 101             Ok(peer) => {
 102                 future::ok(ApiService { peer, api_config: self.api_config.clone() }).boxed()
 103             }
 104         }
 105     }
 106 }
 107
 108 pub struct ApiService {
 109     pub peer: std::net::SocketAddr,
 110     pub api_config: Arc<ApiConfig>,
 111 }
 112
 113 fn log_response(
 114     logfile: Option<&Mutex<FileLogger>>,
 115     peer: &std::net::SocketAddr,
 116     method: hyper::Method,
 117     path_query: &str,
 118     resp: &Response<Body>,
 119 ) {
 120
 121     if resp.extensions().get::<NoLogExtension>().is_some() { return; };
 122
 123     // we also log URL-to-long requests, so avoid message bigger than PIPE_BUF (4k on Linux)
 124     // to profit from atomicty guarantees for O_APPEND opened logfiles
 125     let path = &path_query[..MAX_URI_QUERY_LENGTH.min(path_query.len())];
 126
 127     let status = resp.status();
 128
 129     if !(status.is_success() || status.is_informational()) {
 130         let reason = status.canonical_reason().unwrap_or("unknown reason");
 131
 132         let mut message = "request failed";
 133         if let Some(data) = resp.extensions().get::<ErrorMessageExtension>() {
 134             message = &data.0;
 135         }
 136
 137         log::error!("{} {}: {} {}: [client {}] {}", method.as_str(), path, status.as_str(), reason, peer, message);
 138     }
 139     if let Some(logfile) = logfile {
 140         let user = match resp.extensions().get::<Userid>() {
 141             Some(userid) => userid.as_str(),
 142             None => "-",
 143         };
 144         let now = proxmox::tools::time::epoch_i64();
 145         // time format which apache/nginx use (by default), copied from pve-http-server
 146         let datetime = proxmox::tools::time::strftime_local("%d/%m/%Y:%H:%M:%S %z", now)
 147             .unwrap_or("-".into());
 148
 149         logfile
 150             .lock()
 151             .unwrap()
 152             .log(format!(
 153                 "{} - {} [{}] \"{} {}\" {} {}",
 154                 peer.ip(),
 155                 user,
 156                 datetime,
 157                 method.as_str(),
 158                 path,
 159                 status.as_str(),
 160                 resp.body().size_hint().lower(),
 161             ));
 162     }
 163 }
 164
 165 fn get_proxied_peer(headers: &HeaderMap) -> Option<std::net::SocketAddr> {
 166     lazy_static! {
 167         static ref RE: Regex = Regex::new(r#"for="([^"]+)""#).unwrap();
 168     }
 169     let forwarded = headers.get(header::FORWARDED)?.to_str().ok()?;
 170     let capture = RE.captures(&forwarded)?;
 171     let rhost = capture.get(1)?.as_str();
 172
 173     rhost.parse().ok()
 174 }
 175
 176 impl tower_service::Service<Request<Body>> for ApiService {
 177     type Response = Response<Body>;
 178     type Error = Error;
 179     type Future = Pin<Box<dyn Future<Output = Result<Response<Body>, Self::Error>> + Send>>;
 180
 181     fn poll_ready(&mut self, _cx: &mut Context) -> Poll<Result<(), Self::Error>> {
 182         Poll::Ready(Ok(()))
 183     }
 184
 185     fn call(&mut self, req: Request<Body>) -> Self::Future {
 186         let path = req.uri().path_and_query().unwrap().as_str().to_owned();
 187         let method = req.method().clone();
 188
 189         let config = Arc::clone(&self.api_config);
 190         let peer = match get_proxied_peer(req.headers()) {
 191             Some(proxied_peer) => proxied_peer,
 192             None => self.peer,
 193         };
 194         async move {
 195             let response = match handle_request(Arc::clone(&config), req, &peer).await {
 196                 Ok(response) => response,
 197                 Err(err) => {
 198                     let (err, code) = match err.downcast_ref::<HttpError>() {
 199                         Some(apierr) => (apierr.message.clone(), apierr.code),
 200                         _ => (err.to_string(), StatusCode::BAD_REQUEST),
 201                     };
 202                     Response::builder().status(code).body(err.into())?
 203                 }
 204             };
 205             let logger = config.get_file_log();
 206             log_response(logger, &peer, method, &path, &response);
 207             Ok(response)
 208         }
 209         .boxed()
 210     }
 211 }
 212
 213 fn parse_query_parameters<S: 'static + BuildHasher + Send>(
 214     param_schema: &ObjectSchema,
 215     form: &str, // x-www-form-urlencoded body data
 216     parts: &Parts,
 217     uri_param: &HashMap<String, String, S>,
 218 ) -> Result<Value, Error> {
 219
 220     let mut param_list: Vec<(String, String)> = vec![];
 221
 222     if !form.is_empty() {
 223         for (k, v) in form_urlencoded::parse(form.as_bytes()).into_owned() {
 224             param_list.push((k, v));
 225         }
 226     }
 227
 228     if let Some(query_str) = parts.uri.query() {
 229         for (k, v) in form_urlencoded::parse(query_str.as_bytes()).into_owned() {
 230             if k == "_dc" { continue; } // skip extjs "disable cache" parameter
 231             param_list.push((k, v));
 232         }
 233     }
 234
 235     for (k, v) in uri_param {
 236         param_list.push((k.clone(), v.clone()));
 237     }
 238
 239     let params = parse_parameter_strings(&param_list, param_schema, true)?;
 240
 241     Ok(params)
 242 }
 243
 244 async fn get_request_parameters<S: 'static + BuildHasher + Send>(
 245     param_schema: &ObjectSchema,
 246     parts: Parts,
 247     req_body: Body,
 248     uri_param: HashMap<String, String, S>,
 249 ) -> Result<Value, Error> {
 250
 251     let mut is_json = false;
 252
 253     if let Some(value) = parts.headers.get(header::CONTENT_TYPE) {
 254         match value.to_str().map(|v| v.split(';').next()) {
 255             Ok(Some("application/x-www-form-urlencoded")) => {
 256                 is_json = false;
 257             }
 258             Ok(Some("application/json")) => {
 259                 is_json = true;
 260             }
 261             _ => bail!("unsupported content type {:?}", value.to_str()),
 262         }
 263     }
 264
 265     let body = req_body
 266         .map_err(|err| http_err!(BAD_REQUEST, "Promlems reading request body: {}", err))
 267         .try_fold(Vec::new(), |mut acc, chunk| async move {
 268             if acc.len() + chunk.len() < 64*1024 { //fimxe: max request body size?
 269                 acc.extend_from_slice(&*chunk);
 270                 Ok(acc)
 271             } else {
 272                 Err(http_err!(BAD_REQUEST, "Request body too large"))
 273             }
 274         }).await?;
 275
 276     let utf8_data = std::str::from_utf8(&body)
 277         .map_err(|err| format_err!("Request body not uft8: {}", err))?;
 278
 279     if is_json {
 280         let mut params: Value = serde_json::from_str(utf8_data)?;
 281         for (k, v) in uri_param {
 282             if let Some((_optional, prop_schema)) = param_schema.lookup(&k) {
 283                 params[&k] = parse_simple_value(&v, prop_schema)?;
 284             }
 285         }
 286         verify_json_object(&params, param_schema)?;
 287         return Ok(params);
 288     } else {
 289         parse_query_parameters(param_schema, utf8_data, &parts, &uri_param)
 290     }
 291 }
 292
 293 struct NoLogExtension();
 294
 295 async fn proxy_protected_request(
 296     info: &'static ApiMethod,
 297     mut parts: Parts,
 298     req_body: Body,
 299     peer: &std::net::SocketAddr,
 300 ) -> Result<Response<Body>, Error> {
 301
 302     let mut uri_parts = parts.uri.clone().into_parts();
 303
 304     uri_parts.scheme = Some(http::uri::Scheme::HTTP);
 305     uri_parts.authority = Some(http::uri::Authority::from_static("127.0.0.1:82"));
 306     let new_uri = http::Uri::from_parts(uri_parts).unwrap();
 307
 308     parts.uri = new_uri;
 309
 310     let mut request = Request::from_parts(parts, req_body);
 311     request
 312         .headers_mut()
 313         .insert(header::FORWARDED, format!("for=\"{}\";", peer).parse().unwrap());
 314
 315     let reload_timezone = info.reload_timezone;
 316
 317     let resp = hyper::client::Client::new()
 318         .request(request)
 319         .map_err(Error::from)
 320         .map_ok(|mut resp| {
 321             resp.extensions_mut().insert(NoLogExtension());
 322             resp
 323         })
 324         .await?;
 325
 326     if reload_timezone { unsafe { tzset(); } }
 327
 328     Ok(resp)
 329 }
 330
 331 pub async fn handle_api_request<Env: RpcEnvironment, S: 'static + BuildHasher + Send>(
 332     mut rpcenv: Env,
 333     info: &'static ApiMethod,
 334     formatter: &'static OutputFormatter,
 335     parts: Parts,
 336     req_body: Body,
 337     uri_param: HashMap<String, String, S>,
 338 ) -> Result<Response<Body>, Error> {
 339
 340     let delay_unauth_time = std::time::Instant::now() + std::time::Duration::from_millis(3000);
 341
 342     let result = match info.handler {
 343         ApiHandler::AsyncHttp(handler) => {
 344             let params = parse_query_parameters(info.parameters, "", &parts, &uri_param)?;
 345             (handler)(parts, req_body, params, info, Box::new(rpcenv)).await
 346         }
 347         ApiHandler::Sync(handler) => {
 348             let params = get_request_parameters(info.parameters, parts, req_body, uri_param).await?;
 349             (handler)(params, info, &mut rpcenv)
 350                 .map(|data| (formatter.format_data)(data, &rpcenv))
 351         }
 352         ApiHandler::Async(handler) => {
 353             let params = get_request_parameters(info.parameters, parts, req_body, uri_param).await?;
 354             (handler)(params, info, &mut rpcenv)
 355                 .await
 356                 .map(|data| (formatter.format_data)(data, &rpcenv))
 357         }
 358     };
 359
 360     let resp = match result {
 361         Ok(resp) => resp,
 362         Err(err) => {
 363             if let Some(httperr) = err.downcast_ref::<HttpError>() {
 364                 if httperr.code == StatusCode::UNAUTHORIZED {
 365                     tokio::time::delay_until(Instant::from_std(delay_unauth_time)).await;
 366                 }
 367             }
 368             (formatter.format_error)(err)
 369         }
 370     };
 371
 372     if info.reload_timezone { unsafe { tzset(); } }
 373
 374     Ok(resp)
 375 }
 376
 377 fn get_index(
 378     userid: Option<Userid>,
 379     csrf_token: Option<String>,
 380     language: Option<String>,
 381     api: &Arc<ApiConfig>,
 382     parts: Parts,
 383 ) ->  Response<Body> {
 384
 385     let nodename = proxmox::tools::nodename();
 386     let user = userid.as_ref().map(|u| u.as_str()).unwrap_or("");
 387
 388     let csrf_token = csrf_token.unwrap_or_else(|| String::from(""));
 389
 390     let mut debug = false;
 391     let mut template_file = "index";
 392
 393     if let Some(query_str) = parts.uri.query() {
 394         for (k, v) in form_urlencoded::parse(query_str.as_bytes()).into_owned() {
 395             if k == "debug" && v != "0" && v != "false" {
 396                 debug = true;
 397             } else if k == "console" {
 398                 template_file = "console";
 399             }
 400         }
 401     }
 402
 403     let mut lang = String::from("");
 404     if let Some(language) = language {
 405         if Path::new(&format!("/usr/share/pbs-i18n/pbs-lang-{}.js", language)).exists() {
 406             lang = language;
 407         }
 408     }
 409
 410     let data = json!({
 411         "NodeName": nodename,
 412         "UserName": user,
 413         "CSRFPreventionToken": csrf_token,
 414         "language": lang,
 415         "debug": debug,
 416     });
 417
 418     let (ct, index) = match api.render_template(template_file, &data) {
 419         Ok(index) => ("text/html", index),
 420         Err(err) => {
 421             ("text/plain", format!("Error rendering template: {}", err))
 422         }
 423     };
 424
 425     let mut resp = Response::builder()
 426         .status(StatusCode::OK)
 427         .header(header::CONTENT_TYPE, ct)
 428         .body(index.into())
 429         .unwrap();
 430
 431     if let Some(userid) = userid {
 432         resp.extensions_mut().insert(userid);
 433     }
 434
 435     resp
 436 }
 437
 438 fn extension_to_content_type(filename: &Path) -> (&'static str, bool) {
 439
 440     if let Some(ext) = filename.extension().and_then(|osstr| osstr.to_str()) {
 441         return match ext {
 442             "css" => ("text/css", false),
 443             "html" => ("text/html", false),
 444             "js" => ("application/javascript", false),
 445             "json" => ("application/json", false),
 446             "map" => ("application/json", false),
 447             "png" => ("image/png", true),
 448             "ico" => ("image/x-icon", true),
 449             "gif" => ("image/gif", true),
 450             "svg" => ("image/svg+xml", false),
 451             "jar" => ("application/java-archive", true),
 452             "woff" => ("application/font-woff", true),
 453             "woff2" => ("application/font-woff2", true),
 454             "ttf" => ("application/font-snft", true),
 455             "pdf" => ("application/pdf", true),
 456             "epub" => ("application/epub+zip", true),
 457             "mp3" => ("audio/mpeg", true),
 458             "oga" => ("audio/ogg", true),
 459             "tgz" => ("application/x-compressed-tar", true),
 460             _ => ("application/octet-stream", false),
 461         };
 462     }
 463
 464     ("application/octet-stream", false)
 465 }
 466
 467 async fn simple_static_file_download(filename: PathBuf) -> Result<Response<Body>, Error> {
 468
 469     let (content_type, _nocomp) = extension_to_content_type(&filename);
 470
 471     use tokio::io::AsyncReadExt;
 472
 473     let mut file = File::open(filename)
 474         .await
 475         .map_err(|err| http_err!(BAD_REQUEST, "File open failed: {}", err))?;
 476
 477     let mut data: Vec<u8> = Vec::new();
 478     file.read_to_end(&mut data)
 479         .await
 480         .map_err(|err| http_err!(BAD_REQUEST, "File read failed: {}", err))?;
 481
 482     let mut response = Response::new(data.into());
 483     response.headers_mut().insert(
 484         header::CONTENT_TYPE,
 485         header::HeaderValue::from_static(content_type));
 486     Ok(response)
 487 }
 488
 489 async fn chuncked_static_file_download(filename: PathBuf) -> Result<Response<Body>, Error> {
 490     let (content_type, _nocomp) = extension_to_content_type(&filename);
 491
 492     let file = File::open(filename)
 493         .await
 494         .map_err(|err| http_err!(BAD_REQUEST, "File open failed: {}", err))?;
 495
 496     let payload = tokio_util::codec::FramedRead::new(file, tokio_util::codec::BytesCodec::new())
 497         .map_ok(|bytes| hyper::body::Bytes::from(bytes.freeze()));
 498     let body = Body::wrap_stream(payload);
 499
 500     // fixme: set other headers ?
 501     Ok(Response::builder()
 502        .status(StatusCode::OK)
 503        .header(header::CONTENT_TYPE, content_type)
 504        .body(body)
 505        .unwrap()
 506     )
 507 }
 508
 509 async fn handle_static_file_download(filename: PathBuf) ->  Result<Response<Body>, Error> {
 510
 511     let metadata = tokio::fs::metadata(filename.clone())
 512         .map_err(|err| http_err!(BAD_REQUEST, "File access problems: {}", err))
 513         .await?;
 514
 515     if metadata.len() < 1024*32 {
 516         simple_static_file_download(filename).await
 517     } else {
 518         chuncked_static_file_download(filename).await
 519     }
 520 }
 521
 522 fn extract_auth_data(headers: &http::HeaderMap) -> (Option<String>, Option<String>, Option<String>) {
 523
 524     let mut ticket = None;
 525     let mut language = None;
 526     if let Some(raw_cookie) = headers.get("COOKIE") {
 527         if let Ok(cookie) = raw_cookie.to_str() {
 528             ticket = tools::extract_cookie(cookie, "PBSAuthCookie");
 529             language = tools::extract_cookie(cookie, "PBSLangCookie");
 530         }
 531     }
 532
 533     let token = match headers.get("CSRFPreventionToken").map(|v| v.to_str()) {
 534         Some(Ok(v)) => Some(v.to_owned()),
 535         _ => None,
 536     };
 537
 538     (ticket, token, language)
 539 }
 540
 541 fn check_auth(
 542     method: &hyper::Method,
 543     ticket: &Option<String>,
 544     token: &Option<String>,
 545     user_info: &CachedUserInfo,
 546 ) -> Result<Userid, Error> {
 547     let ticket_lifetime = tools::ticket::TICKET_LIFETIME;
 548
 549     let ticket = ticket.as_ref().map(String::as_str);
 550     let userid: Userid = Ticket::parse(&ticket.ok_or_else(|| format_err!("missing ticket"))?)?
 551         .verify_with_time_frame(public_auth_key(), "PBS", None, -300..ticket_lifetime)?;
 552
 553     if !user_info.is_active_user(&userid) {
 554         bail!("user account disabled or expired.");
 555     }
 556
 557     if method != hyper::Method::GET {
 558         if let Some(token) = token {
 559             verify_csrf_prevention_token(csrf_secret(), &userid, &token, -300, ticket_lifetime)?;
 560         } else {
 561             bail!("missing CSRF prevention token");
 562         }
 563     }
 564
 565     Ok(userid)
 566 }
 567
 568 async fn handle_request(
 569     api: Arc<ApiConfig>,
 570     req: Request<Body>,
 571     peer: &std::net::SocketAddr,
 572 ) -> Result<Response<Body>, Error> {
 573
 574     let (parts, body) = req.into_parts();
 575     let method = parts.method.clone();
 576     let (path, components) = tools::normalize_uri_path(parts.uri.path())?;
 577
 578     let comp_len = components.len();
 579
 580     let query = parts.uri.query().unwrap_or_default();
 581     if path.len() + query.len() > MAX_URI_QUERY_LENGTH {
 582         return Ok(Response::builder()
 583             .status(StatusCode::URI_TOO_LONG)
 584             .body("".into())
 585             .unwrap());
 586     }
 587
 588     let env_type = api.env_type();
 589     let mut rpcenv = RestEnvironment::new(env_type);
 590
 591     rpcenv.set_client_ip(Some(*peer));
 592
 593     let user_info = CachedUserInfo::new()?;
 594
 595     let delay_unauth_time = std::time::Instant::now() + std::time::Duration::from_millis(3000);
 596     let access_forbidden_time = std::time::Instant::now() + std::time::Duration::from_millis(500);
 597
 598     if comp_len >= 1 && components[0] == "api2" {
 599
 600         if comp_len >= 2 {
 601
 602             let format = components[1];
 603
 604             let formatter = match format {
 605                 "json" => &JSON_FORMATTER,
 606                 "extjs" => &EXTJS_FORMATTER,
 607                 _ =>  bail!("Unsupported output format '{}'.", format),
 608             };
 609
 610             let mut uri_param = HashMap::new();
 611             let api_method = api.find_method(&components[2..], method.clone(), &mut uri_param);
 612
 613             let mut auth_required = true;
 614             if let Some(api_method) = api_method {
 615                 if let Permission::World = *api_method.access.permission {
 616                     auth_required = false; // no auth for endpoints with World permission
 617                 }
 618             }
 619
 620             if auth_required {
 621                 let (ticket, token, _) = extract_auth_data(&parts.headers);
 622                 match check_auth(&method, &ticket, &token, &user_info) {
 623                     Ok(userid) => rpcenv.set_user(Some(userid.to_string())),
 624                     Err(err) => {
 625                         // always delay unauthorized calls by 3 seconds (from start of request)
 626                         let err = http_err!(UNAUTHORIZED, "authentication failed - {}", err);
 627                         tokio::time::delay_until(Instant::from_std(delay_unauth_time)).await;
 628                         return Ok((formatter.format_error)(err));
 629                     }
 630                 }
 631             }
 632
 633             match api_method {
 634                 None => {
 635                     let err = http_err!(NOT_FOUND, "Path '{}' not found.", path);
 636                     return Ok((formatter.format_error)(err));
 637                 }
 638                 Some(api_method) => {
 639                     let user = rpcenv.get_user();
 640                     if !check_api_permission(api_method.access.permission, user.as_deref(), &uri_param, user_info.as_ref()) {
 641                         let err = http_err!(FORBIDDEN, "permission check failed");
 642                         tokio::time::delay_until(Instant::from_std(access_forbidden_time)).await;
 643                         return Ok((formatter.format_error)(err));
 644                     }
 645
 646                     let result = if api_method.protected && env_type == RpcEnvironmentType::PUBLIC {
 647                         proxy_protected_request(api_method, parts, body, peer).await
 648                     } else {
 649                         handle_api_request(rpcenv, api_method, formatter, parts, body, uri_param).await
 650                     };
 651
 652                     let mut response = match result {
 653                         Ok(resp) => resp,
 654                         Err(err) => (formatter.format_error)(err),
 655                     };
 656
 657                     if let Some(user) = user {
 658                         let userid: Userid = user.parse()?;
 659                         response.extensions_mut().insert(userid);
 660                     }
 661
 662                     return Ok(response);
 663                 }
 664             }
 665
 666         }
 667      } else {
 668         // not Auth required for accessing files!
 669
 670         if method != hyper::Method::GET {
 671             bail!("Unsupported HTTP method {}", method);
 672         }
 673
 674         if comp_len == 0 {
 675             let (ticket, token, language) = extract_auth_data(&parts.headers);
 676             if ticket != None {
 677                 match check_auth(&method, &ticket, &token, &user_info) {
 678                     Ok(userid) => {
 679                         let new_token = assemble_csrf_prevention_token(csrf_secret(), &userid);
 680                         return Ok(get_index(Some(userid), Some(new_token), language, &api, parts));
 681                     }
 682                     _ => {
 683                         tokio::time::delay_until(Instant::from_std(delay_unauth_time)).await;
 684                         return Ok(get_index(None, None, language, &api, parts));
 685                     }
 686                 }
 687             } else {
 688                 return Ok(get_index(None, None, language, &api, parts));
 689             }
 690         } else {
 691             let filename = api.find_alias(&components);
 692             return handle_static_file_download(filename).await;
 693         }
 694     }
 695
 696     Err(http_err!(NOT_FOUND, "Path '{}' not found.", path))
 697 }